Extraterrestrial Life. Antígona Segura Peralta. Penn State University, College of Earth and Mineral Sciences Penn State Astrobiology Research Center. They do exist!. Astrobiology. Astrobiology is the science that studies the origin, evolution and distribution of life in the Universe.
Antígona Segura Peralta
Penn State University, College of Earth and Mineral Sciences
Penn State Astrobiology Research Center
Astrobiology is the science that studies the origin, evolution and distribution of life in the Universe
4 billion years ago
Very hot because its atmosphere
Very near the Sun
No atmosphere, cold but…
100 billion of stars!
Beta Pictoris, a newborn star
Beta Pictoris disk (artist conception)
Panetary nebula and white dwarf
10 billion years
100 million years
Supernova remmanent and neutron star
Those features whose presence or abundance can be attributed to life
The stars emit light (a lot!) and planets doesn’t, they just reflect the light from their parent star.
Terrestrial Planet Finder (TPF):
Arecibo Antenna, Puerto Rico